Gas sparging device



FIG. 1 is a bottom plan view of a gas sparging device;

FIG. 2 is a cross-section side elevation view of the gas sparging device taken along the line A-A in FIG. 1;

FIG. 3 is a perspective view of a bell of the gas sparging device of FIG. 2 with a skirt removed; and,

FIG. 4 is a perspective view of the skirt and bell of the gas sparging device of FIG. 2.

The broken lines shown in the figures represent portions of the gas sparging device that form no part of the claimed design. 

CLAIM We claim the ornamental design for a gas sparging device, as shown and described. 